Bug#1108440: apt: "apt-get clean" breaks "dpkg -l" bash-completion

Package: apt
Version: 3.0.2
Severity: normal

Dear Maintainer,

since upgrading from Bookworm to Trixie, "apt-get clean" also removes the cache
files in /var/cache/apt/. This breaks bash-completion for "dpkg -l" because
it reads /var/cache/apt/pkgcache.bin.

Steps to reproduce the error:

1. apt-get clean
2. dpkg -l base<TAB>  # prints nothing

Steps to reproduce normal behaviour:
1. apt-cache gencaches
2. dpkg -l base<TAB>  # prints "base-files" etc.